- Product Description:
Product name:Sodium Sulfite Anhydrous
Molecular formula: Na2SO3
Quality standard:HG/T 2967-2000
CAS No.: 7757-83-7
EINECS No.: 231-821-4
- Product Characteristics:
White crystalline or powder form; triangular prism crystal shape; alkaline water solution with pH at 9 – 9.5; The highest water solubility is about 28% with temperature at 33.4°C. When exposed to air, it is oxidized to form sodium sulfate. When heated to high temperature, it decomposes to form sodium sulfide; Density: 2.633(15.4°C), Refractive Index: 1.565; Molecular Weight: 126.04.
- Product Technical Data:
| Item | Index |
| Appearance | White crystal or powder |
| Sodium sulfite(Na2SO3),%≥ | 97 |
| Iron(Fe),%≤ | 0.003 |
| Water-insoluble,%≤ | 0.02 |
| Free alkali(Na2SO3),%≤ | 0.1 |
| Sodium sulfate(Na2SO3),%≤ | 2.5 |
| Sodium chloride(NaCl),%≤ | 0.1 |
- Product Applications:
It is used for bleacher of tanning industry and plant fiber, antichlor and bleacher in printing and dyeing industry developer in sensitization industry, lentine in organic industry, reducer in producing aminosalicylic acid, synthetic fiber and stabilizing agent in textile industry. It can prevent the partial oxidation of cotton cloth fiber and influence the fiber strength, and can be used in sorts of cotton fabric scouring, paper-making, electronic, water-treatment, etc.